Pump hanger



s. B. SARGENT Aug. 5 1924.

PUMP HANGER Filed Sept. 19. 1923 "Patented Aug. 5, 1924.

UNITED STATES SUMNER B. SARGENT, OF HUNTINGTON PARK, CALIFORNIA.

PUMP HANGER.

Application filed September 19, 1923.

To all whom it may concern:

Be it known that I, SUMNER B. SARGENT,

a citizen of the United States, residing at Huntington Park, in the county of Los Angeles and State of California, have invented a new and useful Pump Hanger, of which the following is a specification.

This invention relates to mechanism for connecting an operating member, such as a walking beam, to a clamp for the polish rod of a pump so as to effect operation of the pump.

An object of the invention is to provide for continued operation of the polish rod concentrically of the polish rod packing gland after one of the tie members of the hanger breaks. I

Another object is to provide a. superior construction for connecting the tie cables to the links to insure against the tie cables pulling out of the sockets in said links.

Other objects and advantages will appear hereinafter.

The accompanying drawings illustrate the invention:

Figure 1 is a side elevation of a pump hanger constructed in accordance with the provisions of this invention, the walking beam for operating it together with the sam son post also being shown.

Fig. 2 is an elevation from the right of Figure 1.

Fig. 3 is an enlarged broken side elevation of the pivotally suspended arm.

Fig. 4: is an edge view, partly in vertical mid-section, of Figure 3.

Fig. 5 is an enlarged side elevation partly in section, of one of the links and fragments of the tie cable connected therewith.

Fig. 6 is a sectional elevation on the line indicated by 6-6, Figure 5. I

Fig. 7 is an inverted plan section on the line indicated by 77, Figure 5.

Fig. 8 is a plan section on the line indicated by 8-8, Figure 5.

Referring to the drawings, an operating member, in this instance a walking beam, is indicated at a and is fulcrumed at b on the samson post 0. The operating member and samson post are not parts of the invention. The walking beam at is provided with the usual slot at in its end to accommodate an 'arm 8 having a bearing 9 for a shaft 10. The shaft 10 is supported at its opposite ends in journal boxes 11 which are secured Serial No. 663,571.

by lag screws 12, or other suitable devices, to the upper face of the walking beam. The arm 8 is thus pivot-ally suspended from the walking beam. This arm is not specifically claimed herein as it is claimed in another application filed of even date herewith.

The arm 8 projects above the shaft 10 to form an eye 13 for engagement by a tackle hook, not shown, when it is desired to raise the arm 8 higher than the walking beam. stroke can raise it, as, for example, when it is desired to pull the pump. The lower end of the arm '8 is provided with an eye 14, the lower wall 15 of which is arcuate inside so the bight of tie members 16 will rest upon the arcuate portion 15 without sharply bending the tie members which, in this instance, are shown in the form of cables, though rods may be used instead. A plurality of tie members 16 are shown, lying side by side within the eye 1 1.

Both tie members 16 are connected at their opposite ends to a pair of links 17. In other words, each cable 16 is connected at one end to one of the links and at the other end to the other link. Thus it will be seen that, if either of the tie members should break, the other tie member would still function. One of the tie members 16 is slightly longer than the other so as to normally be a trifle slack when the other is taut, the slackness being somewhat exaggerated in Figure 1 of the drawings. The connection between the tie members 16 and links 17 is formed, in this instance, by sockets 18, each link being provided with a pair of sockets and the prolonged axes of the socket bores cutting through the axis of the bearing 19 at thelower end of the link. In other words the tie members are connected with the links approximately radially of the bearings.

Engaging the bearings 19 is a cross bar 20 which is adapted to support the clamp, not shown, that holds the polish rod of the pump. It will be clear that, because of the prolonged axes of the sockets 18 cutting through the axes of the bearings 19, the load upon the cross bar 20 will exert a direct pull through the shorter tie member upon the arm 8. In other words, when the hanger is in use, a line passing through the axes of the bearings 9, 19 will pass through the axis of the taut cable while the longitudinal axis of the arm 8 will, in consequence,

enables the operator to quickly remove thebe at a slight angle to said line, as in Fig. 1. Should the tie member, that is supporting the weight, break, the second tie member will become taut and the links will swing about the axis of the shaft 20 until the second tie member is alined with the bearings 9, 19, as in dotted lines in Fig. 5.

I have shown a special construction for the sockets 18, so as to minimize liability of the tie cables pulling out of said sockets, after being babbitted therein. The cross section of the sockets 18 changes from circular near the upper end to oval or elliptical near the lower end. Each of the links 17 is provided with an opening 21 adjacent the sockets 18 and the bores of the sockets communicate with said opening. The purpose of this construction is to facilitate connecting the cable to the links. 7 It has been customary, heretofore, in babbitting cables in sockets to first remove a portion of the lubricating core of the cable at the end that is to be secured in the socket. This operation separates the strands of the cable and makes it difiicult to insert the cable in the socket and, after the insertion is made, the work of babbitting it in place is not Well accomplished. With my construction the lubricating core remains in the cable ends while said ends are inserted in the sockets. The cables are thrust through the sockets and the ends project out of the opening 21. Portions of the core are then removed from the projecting ends of the cable and then said projecting ends will be flattened out to make them oval in cross section and they will be pulled back into the sockets and babbitted in place, as indicated at 22. It will be clear that my construction greatly facilitates the insertion of the cables in their sockets and makes a stronger connection between the cables and the links.

Assuming that the walking beam (6 is in operation, the arm 8 will oscillate with respect to the walking beam and the strain wi come upon only the tie member 16 that is taut, as in Fig. 1. Assuming, now, that the taut tie member breaks, the links 17 will drop until the other tie member is taut, the links 17 turning about the axis of the cross bar 19 to the position shown in dotted lines in Fig. 5 so that the pull will be direct from the center of the bearings 19 to the arm 8.

It is to be noted that the links 17 are slightly narrower than the eye 14:, and this Thus members 16 through the eye 1 1 can be quite readily effected. Breakage of one of the tie members 16. may occur when the operator is absent from the well, but the pumping operation will continue with. the other tie member until he returns and elects to make substitution of the new links and tie members. 1 r I I l I claim: 7 V r 1. A pump hanger comprising links having bearings, a cross bar supported by the bearings, and a plurality of tie members connected with the links approximately radially of the bearings.

52. A pump hanger comprising an arm, means to pivotally suspend the arm from an operating member, links having bearings, a cross bar supported by the bearings,

and a plurality of tie members connected with the arm and connected with the links approximately radially of the bearings.

3. A pump hanger comprising an arm, means to pivot-ally suspend the arm from an operating member, and means including a pair of tie members of different lengths to connect the arm to a polish rod clamp and operating when the shorter tie member breaks to move the longer tie member into the position first occupied by the shorter tie member.

4. A pump hanger comprising an arm, means to pivotally suspend the arm from an operating member, and means including a pair of tie members to'connect the arm to a polish rod clamp and operating when one of the tie members breaks to move the other tie member into theposition first occupied by the first named tie member.

5. A pump hanger comprising a plurality of tie members, one longer than the other, means to suspendthe tie members from an operating member, and means torconnect the tie members to a polish rod clamp operating when one of the tie members breaks to suspend the polish rod clamp from the longer tie member. 7 j

Signed atLos Angeles, California, this 7th day of September, 1923. 7

SUMNER B. SABGENT. 

